JP2004123128A

JP2004123128A - Self-supportable packaging bag and package

Info

Publication number: JP2004123128A
Application number: JP2002287085A
Authority: JP
Inventors: Shigeru Takahashi; 高橋　盛; Hiromichi Inagaki; 稲垣　宏道
Original assignee: PLASTO KK
Current assignee: PLASTO KK
Priority date: 2002-09-30
Filing date: 2002-09-30
Publication date: 2004-04-22

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-supportable packaging bag and a package which have a base surely hidden at least in the lower end of the bag by a wrapper having folds, appears tight in a packaged form, and has an excellent appearance. <P>SOLUTION: The standing packaging bag P1a and the package P1c are made of the wrapper 1 having folds 2 to be three-plied like a belt extending at the right angle from the vertical direction of the bag. The wrapper is bent like a loop and edges are glued and sealed on the rear. Alternatively, the wrapper is two-folded and the edges are side-sealed. Alternatively, the wrapper is two-folded and both sides are side-sealed. Alternatively, the wrapper is cut into a half width, the halves are overlaid, and both sides are side-sealed. Thus a flat barrel is formed in each case. Both corners on the bottom below the folds are heat-sealed, a pressing crease for two-folding is provided in the middle of each corner heat seal, a triangular corner out of the corner heat seal 6 is cut off, and a bottom heat seal 4 or a top heat seal 9 is applied to make the bag into a flat form. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【産業上の利用分野】
本願発明は、帯状に三枚重ねとなるように折り返して該折り返し部分の内面同士を接着してなるヒダを周面部の少なくとも下端に備えて底面部を隠しタイトな包装形態を感じさせる自立性包装袋及び包装体に関する。
【０００２】
【従来の技術】
例えば、特開平１１−０７０９４７、特開平１１−２２７８０１、特開平１１−３１０２４８、特開平１１−３１０２７６、特開平１１−３４９０１３の自立型包装袋は、いわゆるドイパック（登録商標）形態の包装袋であり、前面部の両側縁と後面部の両側縁とが合掌状にサイドヒートシールを施され、立体的開袋状態にすると二つ折りのボトムガセットが平面状に展開して船底形の底面部となり、前面部と底面部の稜及び後面部と底面部の稜にヒダを備えていて底面部を隠す形態である。
なお、特開平０６−２８６７５８、特開２０００−１５３８５２、特開２０００−２７２６３４の自立型包装袋も、底部がドイパック形態と同一の包装袋である。
【０００３】
特開２０００−１８５７４０、特開２０００−２２９６４６、特開２０００−３０９３４５の自立型包装袋は、袋が扁平状態に製袋され、前面部と後面部と側面部と底面部を有し前面部の端縁と側面部の端縁とが合掌状にサイドヒートシールを施され、又、後面部の端縁と側面部の端縁とが合掌状にサイドヒートシールを施され、立体的開袋状態において前記サイドヒートシールの下部が底面部の側縁に来て水平方向に延びている。この自立性包装袋は、前面部と底面部の稜と後面部と底面部の稜にヘム（折り癖）やヒダがないので、はっきりとした底面部が区画されておらず見栄えが悪く自立性が悪い。
【０００４】
【発明が解決しようとする課題】
本願発明は、上述した点に鑑み案出したもので、帯状に三枚重ねとなるように折り返して該折り返し部分の内面同士を接着してなるヒダを周面部の少なくとも下端に備えて底面部を隠し、ヒダに皺が発生する惧れがなく外観が綺麗なヒダが得られ特にヒダとしての独立した外観を呈さず周面部と一平面を形成してタイトな包装形態を感じさせ、ヒダ部分の完全密封が確保され、自立性を有しない形態から自立性を有する形態に容易に形態変更できて、各種被包装物に合わせて吊るした状態、積み重ねた状態、又は自立させた状態のいずれの展示方法の選択ができる自立性包装袋及び包装体を提供することを目的としている。
【０００５】
【課題を解決するための手段】
［請求項１］に記載の発明は、袋の上下方向に対して直角方向に延びるヒダであって帯状に三枚重ねとなるように折り返して該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダを、該ヒダ２より下側部分が立体的開袋時に底面部を構成するように有する包材よりなり、包材をループに曲成して端縁同士を背貼りシールされているか、又は包材を二つ折りにして端縁同士をサイドシールされているか、又は包材を二つ折りにして両側をサイドシールされているか、又は包材を半幅に裁断して重ねて両側をサイドシールされていることにより扁平筒が形成され、ヒダより下側の底面部の両隅にコーナーヒートシールが施され、コーナーヒートシールの外方の三角コーナーが切除され、ボトムヒートシール又はトップヒートシールが施されて扁平形態に製袋されていることを特徴とする自立性包装袋である。
【０００６】
［請求項２］に記載の発明は、袋の上下方向に対して直角方向に延びるヒダであって帯状に三枚重ねとなるように折り返して該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダを、該ヒダより下側部分が立体的開袋時に底面部を構成するように有する包材よりなり、包材をループに曲成して端縁同士を背貼りシールされているか、又は包材を二つ折りにして端縁同士をサイドシールされているか、又は包材を二つ折りにして両側をサイドシールされているか、又は包材を半幅に裁断して重ねて両側をサイドシールされていることにより扁平筒が形成され、ボトムヒートシール又はトップヒートシールが施されて扁平形態に製袋されていることを特徴とする自立性包装袋である。
【０００７】
［請求項３］に記載の発明は、［請求項１］又は［請求項２］に記載の自立性包装袋に被包装品を収容して開口を閉じ合わせヒートシールを施してなることを特徴とする包装体である。
【０００８】
［請求項４］に記載の発明は、［請求項１］又は［請求項２］に記載の自立性包装袋に被包装品を収容して開口を閉じ合わせヒートシールを施してなり、前面部の下部と後面部の下部が離間して前記ヒダが周面部とは同一平面の袋下端となり、ヒダの内側に底面部が隠れる形態になっていることを特徴とする包装体である。
【０００９】
【発明の実施の形態】
本願発明の第一の実施の形態にかかる自立性包装袋及びその包装体を図１を参照して説明する。
図１（ｃ）は、自立性包装袋Ｐ１ａを示す。図１（ｄ）に示す包装体Ｐ１ｂは、図１（ｃ）の自立性包装袋Ｐ１ａを用いて自立性を有しない形態に包装した包装体を示す。図１（ｆ）に示す包装体Ｐ１ｃは、図１（ｃ）の自立性包装袋Ｐ１ａを用いて自立性を有する形態に包装した包装体を示す。
図１（ｃ）の自立性包装袋Ｐ１ａは、図１（ａ）に示すように、袋の上下方向（矢印Ｙの方向）に対して直角方向に延びるヒダであって包材下部が包材上部の内側に来るように帯状に三枚重ねとなるように折り返してヒートシールにより該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダ２を、該ヒダ２より下側部分が立体的開袋時に底面部を構成する関係寸法となるように有する包材１を用い、図１（ｂ）に示すように、該包材１を例えば平行板（図示しない）に一巻きにして水平断面がループ状になるように曲成して袋幅の略中央で包材両側縁１ａ，１ａを突き合わせ（製作の精度上０．５〜２ｍｍ位の隙間が空いてしまう突合せも含まれる）、突き合せ部分の内面側に延伸フィルムの両面に無延伸フィルムを積層してなる両面ヒートシール性を有する接続テープ３を当てて外方からヒートシーラー（図示しない）を押し当てて、包材両側縁１ａ，１ａと接続テープ３をヒートシール接続して扁平筒状とし、続いて、図１（ｃ）に示すように、下端にボトムヒートシール４を施しかつヒダ２よりも下側の底面部を構成する部分５の両隅に斜めシールであるコーナーヒートシール６，６を施し、さらにコーナーヒートシール６，６の中途に立体的開袋時に該斜めのヒートシール部分が二つ折りに折れやすくなるためのプレス押し筋７，７を付与し、余分の両隅三角部８，８を切除してなる。
図１（ｃ）に示す自立性包装袋は、図１（ｄ）に示すように、袋下部に自立性を持たせることをしない扁平のままで、上端開口を開いて被包装物（図示しない）を収容して上端開口を閉じてトップヒートシール９を施し、吊るし孔１０，１０を穿ち、開封用の左右一対のノッチ１１，１１を設けて自立性を有しない包装体Ｐ１ｂとすることができる。
図１（ｄ）に示す自立性を有しない包装体Ｐ１ｂは、吊るして陳列するのに好ましい形態、及び、段ボール箱内に積み重ねて収容するするのに好ましい形態である。
そして、図１（ｄ）に示す自立性を有しない包装体Ｐ１ｂは、前面側と後面側のヒダ２の下側に指を掛けて互いに離間すると、図１（ｆ）に示す自立性を有する包装体Ｐ１ｃに極めて容易に形態変更できる。詳述すると、前面側と後面側のヒダ２の付近を互いに離間することで、第一段階の形態変化として図１（ｅ）に示すように、ヒダ２より下側部分５の中央部５ａが平面展開しかつその両側部分に三角耳５ｂ，５ｂが前後方向に起立してプレス押し筋７が三角耳５ｂの外側の立上がり基端に来るので、各三角耳５ｂを外側に倒す力を軽く加えると第二段階の形態変化として各三角耳５ｂが倒れてヒダ２の内側に隠れるように容易に折り畳まれ、もって、図１（ｆ）に示す、自立性を有する底面状態になる。
従って、店内に吊るされるか又は棚に積み重ねて陳列されている図１（ｄ）に示す自立性を有しない形態の包装体Ｐ１ｂを消費者が購入し、開封する前又は後に、図１（ｅ）に示す形態を経て図１（ｆ）に示す自立性を有する包装体Ｐ１ｃに極めて容易に形態変更できる。他方、店員が、図１（ｆ）に示す自立性を有する包装体Ｐ１ｃとして棚に立てて陳列することもできる。包装体Ｐ１ｃが自立性を有し上端が切り開かれることは、被包装物が液体、粉粒体、その他流動体であるとき、あるいは、ばらもののお菓子類であるとき、あるいは電子レンジ加熱食品であるときに好ましい。
なお、給袋充填包装機において、図１（ｃ）に示す自立性包装袋Ｐ１ａの上端開口を開きかつ底面部を図１（ｆ）に示すように平面展開して自立性を持たせた状態で被包装物（図示しない）を収容し上端開口を閉じてトップヒートシール９を施し、吊るし孔１０，１０を穿ち、ノッチ１１，１１を設けて、図１（ｆ）に示す包装体Ｐ１ｃとして段ボール箱に詰めて流通・運送しても良い。
【００１０】
本願発明の第二の実施の形態にかかる自立性包装袋及びその包装体を図２を参照して説明する。
図２（ｃ）は、自立性包装袋Ｐ２ａを示す。図２（ｄ）に示す包装体Ｐ２ｂは、図２（ｃ）の自立性包装袋Ｐ２ａを用いて自立性を有しない形態に包装した包装体を示す。図２（ｅ）に示す包装体Ｐ２ｃは、図２（ｃ）の自立性包装袋Ｐ２ａを用いて自立性を有する形態に包装した包装体を示す。
図２（ｃ）の自立性包装袋Ｐ２ａは、図２（ａ）に示すように、袋の上下方向（矢印Ｙの方向）に対して直角方向に延びるヒダであって包材下部が包材上部の内側に来るように帯状に三枚重ねとなるように折り返してヒートシールにより該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダ２を、該ヒダ２より下側部分が立体的開袋時に底面部を構成する関係寸法となるように有する包材１を用い、図２（ｂ）に示すように、該包材１を例えば平行板（図示しない）に一巻きにして水平断面がループ状になるように曲成して袋幅の略中央で包材両側縁１ａ，１ａを突き合わせ（製作の精度上０．５〜２ｍｍ位の隙間が空いてしまう突合せも含まれる）、突き合せ部分の内面側に延伸フィルムの両面に無延伸フィルムを積層してなる両面ヒートシール性を有する接続テープ３を当てて外方からヒートシーラー（図示しない）を押し当てて、包材両側縁１ａ，１ａと接続テープ３をヒートシール接続して扁平筒状とし、続いて、図２（ｃ）に示すように、ヒダ２よりも下側の底面部を構成する部分５の両隅に斜めシールであるコーナーヒートシール６，６を施し、さらにコーナーヒートシール６，６の中途に立体的開袋時に該斜めのヒートシール部分が二つ折りに折れやすくなるためのプレス押し筋７，７を付与し、余分の両隅三角部８，８を切除し、又、扁平筒の上端縁にトップヒートシール９を施し吊るし孔１０，１０を穿ち、開封用の左右一対のノッチ１１，１１を設けてなる。
図２（ｃ）に示す自立性包装袋Ｐ２ａは、図２（ｄ）に示すように、袋の上下を逆さにして袋下端開口を開いて被包装物（図示しない）を収容して下端開口を閉じてボトムヒートシール４を施し、自立性を有しない包装体Ｐ２ｂとすることができ、これは図１（ｄ）に示す包装体Ｐ１ｂと全く同一の形態になり、従って、図２（ｃ）に示す自立性包装袋Ｐ２ａは、図１（ｃ）に示す包装体Ｐ１ａと全く同一の効果が得られ、図２（ｄ）に示す包装体Ｐ２ｂは、図２（ｅ）に示す自立性を有する包装体Ｐ２ｃに極めて容易に形態変更できる。
【００１１】
本願発明の第三の実施の形態にかかる自立性包装袋及びその包装体を図３を参照して説明する。
図３（ｃ）は、自立性包装袋Ｐ３ａを示す。図３（ｄ）に示す包装体Ｐ３ｂは、図３（ｃ）の自立性包装袋Ｐ３ａを用いて自立性を有しない形態に包装した包装体を示す。図３（ｆ）に示す包装体Ｐ３ｃは、図３（ｃ）の自立性包装袋Ｐ３ａを用いて自立性を有する形態に包装した包装体を示す。
図３（ｃ）の自立性包装袋Ｐ３ａは、図３（ａ）に示すように、袋の上下方向（矢印Ｙの方向）に対して直角方向に延びるヒダであって包材下部が包材上部の内側に来るように帯状に三枚重ねとなるように折り返してヒートシールにより該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダ２を、該ヒダ２より下側部分が立体的開袋時に底面部を構成する関係寸法となるように有する包材１を用い、図３（ｂ）に示すように、該包材１を二つ折りにするか又は幅半分に半裁してから重ね合わせ、両側縁をヒートシーラーで挟圧してサイドヒートシール１２，１２を施して扁平筒状とし、続いて、図３（ｃ）に示すように、下端にボトムヒートシール４を施しかつヒダ２よりも下側の底面部を構成する部分５の両隅に斜めシールであるコーナーヒートシール６，６を施し、さらにコーナーヒートシール６，６の中途に立体的開袋時に該斜めのヒートシール部分が二つ折りに折れやすくなるためのプレス押し筋７，７を付与し、余分の両隅三角部８，８を切除してなる。
図３（ｃ）に示す自立性包装袋Ｐ３ａは、図３（ｄ）に示すように、袋下部に自立性を持たせることをしない扁平のままで、上端開口を開いて被包装物（図示しない）を収容して上端開口を閉じてトップヒートシール９を施し、吊るし孔１０，１０を穿ち、開封用の左右一対のノッチ１１，１１を設けて自立性を有しない包装体Ｐ３ｂとすることができる。
図３（ｄ）に示す形態の包装体Ｐ３ｂは、吊るして陳列するのに好ましい形態、及び、段ボール箱内に積み重ねて収容するのに好ましい形態である。
そして、図３（ｄ）に示す形態の包装体Ｐ３ｂは、前面側と後面側のヒダ２の下側に指を掛けて互いに離間すると、図３（ｆ）に示す自立性を有する形態の包装体Ｐ３ｃに極めて容易に形態変更できる。詳述すると、前面側と後面側のヒダ２の付近を互いに離間することで、第一段階の形態変化として図３（ｅ）に示すように、ヒダ２より下側部分５の中央部５ａが平面展開しかつその両側部分に三角耳５ｂ，５ｂが前後方向に起立してプレス押し筋７が三角耳５ｂの外側の立上がり基端に来るので、各三角耳５ｂを外側に倒す力を軽く加えると第二段階の形態変化として各三角耳５ｂが倒れてヒダ２の内側に隠れるように容易に折り畳まれ、もって、図３（ｆ）に示す、自立性を有する底面状態になる。
従って、店内に吊るされるか又は棚に積み重ねて陳列されている図３（ｄ）に示す自立性を有しない形態の包装体Ｐ３ｂを消費者が購入し、開封する前又は後に、図３（ｅ）に示す形態を経て図３（ｆ）に示す自立性を有する包装体Ｐ３ｃに極めて容易に形態変更できる。他方、店員が、図３（ｆ）に示す自立性を有する包装体Ｐ３ｃとして棚に立てて陳列することもできる。包装体Ｐ３ｃが自立性を有し上端が切り開かれることは、被包装物が液体、粉粒体、その他流動体であるとき、あるいは、ばらもののお菓子類であるとき、あるいは電子レンジ加熱食品であるときに好ましい。
なお、給袋充填包装機において、図３（ｃ）に示す自立性包装袋の上端開口を開きかつ底面部を図３（ｆ）に示すように平面展開して自立性を持たせた状態で被包装物（図示しない）を収容し上端開口を閉じてトップヒートシール９を施し、吊るし孔１０，１０を穿ち、ノッチ１１，１１を設けて、図３（ｆ）に示す包装体Ｐ３ｃとして段ボール箱に詰めて流通・運送しても良い。
【００１２】
本願発明の第四の実施の形態にかかる自立性包装袋及びその包装体を図４を参照して説明する。
図４（ｃ）は、自立性包装袋Ｐ４ａを示す。図４（ｄ）に示す包装体Ｐ４ｂは、図４（ｃ）の自立性包装袋Ｐ４ａを用いて自立性を有しない形態に包装した包装体を示す。図４（ｅ）に示す包装体Ｐ４ｃは、図４（ｃ）の自立性包装袋Ｐ４ａを用いて自立性を有する形態に包装した包装体を示す。
図４（ｃ）の自立性包装袋Ｐ４ａは、図４（ａ）に示すように、袋の上下方向（矢印Ｙの方向）に対して直角方向に延びるヒダであって包材下部が包材上部の内側に来るように帯状に三枚重ねとなるように折り返してヒートシールにより該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダ２を、該ヒダ２より下側部分が立体的開袋時に底面部を構成する関係寸法となるように有する包材１を用い、図４（ｂ）に示すように、該包材１を二つ折りにするか又は幅半分に半裁してから重ね合わせ、両側縁をヒートシーラーで挟圧してサイドヒートシール１２，１２を施して扁平筒状とし、続いて、図４（ｃ）に示すように、ヒダ２よりも下側の底面部を構成する部分５の両隅に斜めシールであるコーナーヒートシール６，６を施し、さらにコーナーヒートシール６，６の中途に立体的開袋時に該斜めのヒートシール部分が二つ折りに折れやすくなるためのプレス押し筋７，７を付与し、余分の両隅三角部８，８を切除し、又、扁平筒の上端縁にトップヒートシール９を施し吊るし孔１０，１０を穿ち、開封用の左右一対のノッチ１１，１１を設けてなる。
図４（ｃ）に示す自立性包装袋Ｐ４ａは、図４（ｄ）に示すように、袋の上下を逆さにして袋下端開口を開いて被包装物（図示しない）を収容して下端開口を閉じてボトムヒートシール４を施し、自立性を有しない包装体Ｐ４ｂとすることができ、これは図３（ｄ）に示す包装体Ｐ３ｂと全く同一の形態になり、従って、図４（ｃ）に示す自立性包装袋Ｐ４ａは、図３（ｃ）に示す包装体Ｐ３ａと全く同一の効果が得られ、図４（ｄ）に示す包装体Ｐ４ｂは、図４（ｅ）に示す自立性を有する包装体Ｐ４ｃに極めて容易に形態変更できる。
【００１３】
本願発明の第一乃至第四の実施の形態にかかる自立性包装袋及びその包装体において、帯状に三枚重ねとなるように折り返して該折り返し部分の内面同士の重なり面が接着し外面同士の重なり面は接着していないヒダ２を形成するには、包材を突き込み板で突き込んで突き込み板を後退させて二枚合わせ部分を作ってヒートシールを施して横に倒すことで達成できる。
本願発明の第三及び第四の実施の形態において、コーナーヒートシール６，６を施すこと、及びその外方の両隅三角部８，８を切除することを行なわないでできる自立性包装袋及びその包装体であっても、自立性を有しない形態から自立性を有する形態に容易に形態変更できて、各種被包装物に合わせて吊るした状態、積み重ねた状態、又は自立させた状態のいずれの展示方法の選択ができるので、本願発明に含む。
本願発明の第一乃至第四の実施の形態にかかる自立性包装袋及びその包装体において、ヒダ２は、ヒートシールにより形成されることが好ましいが、効率が悪いけれども接着剤によるパートコート接着を排除しない。
本願発明の第一及び第二の実施の形態にかかる自立性包装袋及びその包装体において、接続テープ３を延伸フィルムの両面に未延伸のシーラントフィルムを積層してなる三層フィルムとする理由は、ボトムヒートシールとトップヒートシールとヒダの部分における該接続テープ同士のヒートシールの確保のためである。なお、包材１はシーラントフィルム単体より構成されていても良い。又、ヒートシール性を有しない延伸フィルムの両縁にヒートシール剤を塗布したものであっても良い。
【００１４】
本願発明の自立性包装袋を製作するための包材１は例えば以下のような積層フィルムからなる。
（１）　ＯＰＰ　２０μｍ／接着剤／ＬＬＤＰＥ　２０μｍ　・・・・（外層／内層：シーラント）
（２）　ＯＰＰ　２０μｍ／接着剤／一軸延伸または二軸延伸ＨＤＰＥ／接着剤／ＬＬＤＰＥ・・・・（外層／中間層／内層：シーラント）
（３）　ＯＰＰ　２０μｍ／接着剤／アルミニウム箔／接着剤／ＬＬＤＰＥ　２０μｍ・・・・（外層／中間層／内層：シーラント）
（４）　ＯＰＰ（シリカ又はアルミナ蒸着層）／接着剤／一軸延伸または二軸延伸ＨＤＰＥ／接着剤／ＬＬＤＰＥ　２０μｍ・・・・（外層／中間層／内層：シーラント）
（５）ＰＥＴ２０μｍ／接着剤／アルミニウム箔／接着剤／ＯＰＰ２０μｍ／接着剤／ＬＬＤＰＥ　２０μｍ・・・・（外層／中間層／中間層／中間層／内層：シーラント）
（６）　紙／接着剤ＬＬＤＰＥ　　５０μｍ・・・・（外層／内層：シーラント）
（７）　ＰＥＴ　１２μｍ／接着剤／ＬＬＤＰＥ　２０μｍ　・・・・（外層／内層：シーラント）
（８）　ＡＬ　９μｍ／接着剤／ＬＬＤＰＥ　　７０μｍ・・・・（外層／内層：シーラント）
（９）　ＰＥＴ・ＳｉＯｘ　１２μｍ／接着剤／ＬＬＤＰＥ　　１００μｍ　・・・・（外層／内層：シーラント）
（１０）　ＣＰＰ　５μｍ・ＯＰＰ　３０μｍ共押出し／接着剤／ＣＰＰ　２０μｍ　・・・・（外層／内層；内外面シーラント）
ヒダをヒートシールにより形成するために、上記の包材の構成の例示は内面がシーラントフィルムとなっている。
【００１５】
本願発明の第一乃至第四の実施の形態にかかる自立性包装袋及びその包装体の変形例として、コーナーヒートシール６，６をくの字に曲がった形状でなく、直線状、湾曲状としても良い。
本願発明の第一及び第二の実施の形態にかかる自立性包装袋及びその包装体の変形例として、接続テープ３を用いずに、包材両側縁１ａ，１ａを合掌状に突き合わせてセンターヒートシールを直接施して横に倒して加熱して倒れた状態を維持するピロー形態としても良い。
本願発明の第三及び第四の実施の形態にかかる自立性包装袋及びその包装体の変形例として、該包材１を二つ折りにするときはしてから重ね合わせ、包材側端縁同士にサイドヒートシール１２を施し、反対側のループ状の折り返し端縁はサイドヒートシールを施さなくても良い。
【００１６】
本願発明の第一乃至第四の実施の形態にかかる自立性包装袋を量産するには、ヒダが袋の長さピッチで付いているヒダ付きの連続する包材を用いフォーマーに掛けて縦ヒートシールして連続するヒダ付きの扁平筒を形成する。
【００１７】
本願発明の第一乃至第四の実施の形態にかかる自立性包装袋は、上部に、スパウトを備えること、注ぎ口を設けること、ジッパーを設けること、高圧蒸気で開封するシール弁を設けること、カットテープを設けることなども技術的範囲に含まれる。
【００１８】
【発明の効果】
以上説明してきたように、本願発明の自立性包装袋及び包装体は、帯状に三枚重ねとなるように折り返して該折り返し部分の内面同士を接着してなるヒダを少なくとも前面部と後面部の下端又は周面部の下端に備えて底面部を隠すようにした構成であり、包材が平面のときにヒダを形成してから袋を作るので、ヒダに皺が発生する惧れがなく外観が綺麗なヒダが得られ、ヒダが前後面の延長端縁に位置し、ヒダとしての独立した外観を呈さず前面部や後面部又は周面部と一平面を形成しているのでタイトな包装形態を感じさせ、包装形態として美観に優れており、ヒダ部分の完全密封が確保され、自立性を有しない形態から自立性を有する形態に容易に形態変更できて、各種被包装物に合わせて吊るした状態、積み重ねた状態、又は自立させた状態のいずれの展示方法の選択ができる。特に［請求項２］に記載の自立性包装袋及びその包装体は、コーナーヒートシールの中ほどにプレス押し筋を付与したので自立性を有しない形態から自立性を有する形態に極めて容易に形態変更できる。
又、店舗では吊るされるか又は棚に積み重ねて陳列されている自立性を有しない形態の包装体を消費者が購入し、開封する前又は後に、自立性を有する包装体に極めて容易に形態変更できる。包装体が自立性を有し上端が切り開かれることは、被包装物が液体、粉粒体、その他流動体であるとき、あるいは、ばらもののお菓子類であるとき、あるいは電子レンジ加熱食品であるときに好ましい。
【図面の簡単な説明】
【図１】本願発明の第一の実施の形態にかかる自立性包装袋を示す。
図１（ａ）はヒダ付き包材の斜視図、図１（ｂ）はヒダ付き扁平筒とした状態を示す斜視図、図１（ｃ）は自立性包装袋の斜視図である。図１（ｄ）は自立性を有しない包装体の斜視図、図１（ｅ）は前面側と後面側のヒダの付近を互いに離間した底面部の第一段階の平面展開状態を示す包装体の斜視図、図１（ｆ）は自立性を有する包装体の斜視図である。
【図２】本願発明の第二の実施の形態にかかる自立性包装袋を示す。
図２（ａ）はヒダ付き包材の斜視図、図２（ｂ）はヒダ付き扁平筒とした状態を示す斜視図、図２（ｃ）は自立性包装袋の斜視図である。図２（ｄ）は自立性を有しない包装体の斜視図、図２（ｅ）は自立性を有する包装体の斜視図である。
【図３】本願発明の第三の実施の形態にかかる自立性包装袋を示す。
図３（ａ）はヒダ付き包材の斜視図、図３（ｂ）はヒダ付き扁平筒とした状態を示す斜視図、図３（ｃ）は自立性包装袋の斜視図である。図３（ｄ）は自立性を有しない包装体の斜視図、図３（ｅ）は前面側と後面側のヒダの付近を互いに離間した底面部の第一段階の平面展開状態を示す包装体の斜視図、図３（ｆ）は自立性を有する包装体の斜視図である。
【図４】本願発明の第四の実施の形態にかかる自立性包装袋を示す。
図４（ａ）はヒダ付き包材の斜視図、図４（ｂ）はヒダ付き扁平筒とした状態を示す斜視図、図４（ｃ）は自立性包装袋の斜視図である。図４（ｄ）は自立性を有しない包装体の斜視図、図４（ｅ）は自立性を有する包装体の斜視図である。
【符号の説明】
本願発明の第三の実施の形態にかかる自立性包装袋及びその包装体を図３を参照して説明する。
Ｐ１ａ・・・自立性包装袋、Ｐ１ｂ・・・自立性を有しない包装体、Ｐ１ｃ・・・自立性を有する包装体、１・・・包材、２・・・ヒダ、１ｂ・・・包材両側縁、３・・・接続テープ、４・・・ボトムヒートシール、５・・・ヒダよりも下側の底面部を構成する部分、６・・・コーナーヒートシール、７・・・プレス押し筋、８・・・余分の両隅三角部、９・・・トップヒートシール、１０・・・吊るし孔、１１・・・ノッチ、１２・・・サイドヒートシール、Ｐ２ａ・・・自立性包装袋、Ｐ２ｂ・・・自立性をを有しない包装体、Ｐ２ｃ・・・自立性を有する包装体、Ｐ３ａ・・・自立性包装袋、Ｐ３ｂ・・・自立性をを有しない包装体、Ｐ３ｃ・・・自立性を有する包装体、Ｐ４ａ・・・自立性包装袋、Ｐ４ｂ・・・自立性をを有しない包装体、Ｐ４ｃ・・・自立性を有する包装体、[0001]
[Industrial applications]
The invention of the present application is a self-supporting package that is folded in a band shape so as to be stacked three times and provided with folds formed by bonding the inner surfaces of the folded portions to at least the lower end of the peripheral surface portion to hide the bottom surface portion and feel a tight packaging form It relates to a bag and a package.
[0002]
[Prior art]
For example, the self-standing packaging bags disclosed in JP-A-11-070947, JP-A-11-227801, JP-A-11-310248, JP-A-11-310276, and JP-A-11-349013 are packaging bags in a so-called Doypack (registered trademark) form. , Both side edges of the front part and both sides of the rear part are subjected to side heat sealing in the shape of a palm, and when the bag is opened three-dimensionally, the folded bottom gusset is developed in a plane and becomes a bottom part of a ship bottom shape, The ridges on the front and the bottom and the ridges on the rear and the bottom have folds to hide the bottom.
In addition, the self-standing packaging bags of JP-A-06-286758, JP-A-2000-153852, and JP-A-2000-272634 are also the same packaging bags at the bottom as the Doypack form.
[0003]
Japanese Patent Application Laid-Open Nos. 2000-185740, 2000-229646, and 2000-309345 are self-standing packaging bags in which the bags are formed in a flat state, and have a front part, a rear part, a side part, and a bottom part, and a front part. Side heat seal is applied to the edge of the side and the side edge of the side portion, and side heat seal is applied to the edge of the rear surface and the edge of the side portion in the shape of a palm. , The lower portion of the side heat seal comes to the side edge of the bottom portion and extends in the horizontal direction. This self-supporting packaging bag has no hems (folding habits) or folds at the front and bottom ridges and the rear and bottom ridges. Is bad.
[0004]
[Problems to be solved by the invention]
The invention of the present application has been devised in view of the above-mentioned points, and has a fold formed by folding in a band shape so that three sheets are stacked and bonding the inner surfaces of the folded portions to at least a lower end of a peripheral surface portion, and a bottom portion. Hidden, wrinkles are not likely to occur on the folds, and folds with a beautiful appearance are obtained.Especially, they do not have an independent appearance as folds, form a flat surface with the peripheral surface, and feel tight packaging form, Complete sealing is ensured, the form can be easily changed from a form without independence to a form with independence, and it can be displayed in any of the suspended, stacked, or self-supported state according to various packages It is an object of the present invention to provide a self-contained packaging bag and a package in which a method can be selected.
[0005]
[Means for Solving the Problems]
The invention described in [Claim 1] is a fold extending in a direction perpendicular to the up-down direction of the bag, and is folded back so as to form a three-ply band, and the overlapping surfaces of the inner surfaces of the folded portions are bonded to each other to form an outer surface. The overlapping surfaces are made of a wrapping material having folds that are not bonded to each other so that the lower part of the folds 2 constitutes the bottom surface when the bag is opened three-dimensionally. The backing is sealed, or the packaging material is folded in half and the edges are side-sealed, or the packaging material is folded in half and both sides are side-sealed, or the packaging material is cut to half width. A flat cylinder is formed by overlapping and side sealing on both sides, corner heat seals are applied to both corners of the bottom part below the fold, the outer triangular corner of the corner heat seal is cut off, the bottom Heat sealing or It is self-supporting packaging bag, characterized in that-up heat seal is Seibukuro flattened form is given.
[0006]
The invention described in [Claim 2] is a fold extending in a direction perpendicular to the up-down direction of the bag, folded in a band shape so as to be three-ply, and the inner surfaces of the folded portion are bonded to each other to form an outer surface. The overlapping surfaces of the folds are made of a wrapping material having unbonded folds, and the lower side of the folds constitutes a bottom portion when the bag is opened three-dimensionally. Either the back is sealed, or the packaging material is folded in half and the edges are side-sealed, or the packaging material is folded in half and both sides are sealed, or the packaging material is cut to half width A self-supporting packaging bag characterized in that a flat cylinder is formed by overlapping and side-sealing on both sides, and a bottom heat seal or a top heat seal is applied to form a flat bag.
[0007]
The invention described in [Claim 3] is characterized in that the self-supporting packaging bag according to [Claim 1] or [Claim 2] accommodates an article to be packaged, closes an opening, and performs heat sealing. It is a packaging body.
[0008]
According to a fourth aspect of the present invention, the self-supporting packaging bag according to the first or second aspect is provided with a product to be packaged, the opening is closed, and heat sealing is performed. And a lower portion of the rear surface portion is separated from the lower surface of the fold so that the fold becomes a bag lower end flush with the peripheral surface portion, and a bottom portion is hidden inside the fold.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
A self-contained packaging bag and its package according to a first embodiment of the present invention will be described with reference to FIG.
FIG. 1C shows the self-supporting packaging bag P1a. The package P1b shown in FIG. 1 (d) is a package that is packaged in a form without independence using the self-supporting packaging bag P1a of FIG. 1 (c). A package P1c shown in FIG. 1 (f) is a package packaged in a self-supporting form using the self-supporting packaging bag P1a of FIG. 1 (c).
As shown in FIG. 1A, the self-supporting packaging bag P1a shown in FIG. 1C is a fold extending in a direction perpendicular to the vertical direction of the bag (the direction of arrow Y), and the packaging material lower part is a packaging material. The folds 2 are folded back so as to be in a band shape so as to come inside the upper part, and the overlapping surfaces of the inner surfaces of the folded portions are bonded by heat sealing and the overlapping surfaces of the outer surfaces are not bonded. A packaging material 1 having a lower portion having a relational dimension constituting a bottom surface portion when the bag is opened three-dimensionally is used. As shown in FIG. 1B, the packaging material 1 is, for example, a parallel plate (not shown). And the horizontal section is bent so as to form a loop shape, and the side edges 1a, 1a of the packaging material are abutted substantially at the center of the bag width (a gap of about 0.5 to 2 mm is left in the production accuracy). Butt is included), No stretching on both sides of stretched film on inner side of butted part A heat sealer (not shown) is pressed from the outside with a connection tape 3 having double-sided heat sealing properties formed by laminating films, and both side edges 1a, 1a of the packaging material and the connection tape 3 are heat-sealed and flattened. As shown in FIG. 1 (c), a bottom heat seal 4 is applied to the lower end, and a corner heat which is a diagonal seal is provided at both corners of a portion 5 which constitutes a bottom surface portion below the fold 2 as shown in FIG. Seals 6 and 6 are provided, and press press bars 7 and 7 are provided in the middle of the corner heat seals 6 and 6 so that the diagonal heat seal portion can be easily folded in two at the time of three-dimensional bag opening. The triangular corners 8, 8 are cut off.
As shown in FIG. 1 (d), the self-supporting packaging bag shown in FIG. 1 (c) has an open upper end opening and a packaged object (not shown) while keeping the lower portion of the bag flat without giving any independence. ) Is closed, the top opening is closed, the top heat seal 9 is applied, the hanging holes 10, 10 are formed, and a pair of left and right notches 11, 11 for opening are provided to form a package P <b> 1 b that is not self-supporting. it can.
The package P1b without independence shown in FIG. 1D is a preferred form for hanging and displaying, and a preferred form for stacking and storing in a cardboard box.
Then, the package body P1b without independence shown in FIG. 1D has the independence shown in FIG. 1F when the user puts his / her finger below the front side and the back side of the fold 2 and separates them. The form can be very easily changed to the package P1c. Specifically, by separating the vicinity of the fold 2 on the front side and the rear side from each other, as shown in FIG. 1E, the central part 5a of the lower part 5 of the fold 2 is changed as a first stage form change. The triangular ears 5b, 5b stand up and down on both sides thereof in the front-rear direction, and the press-retractor 7 comes to the rising base end outside the triangular ears 5b. Then, as a form change in the second stage, each triangular ear 5b is easily folded so as to fall down and hide inside the fold 2, and the bottom surface state having autonomy shown in FIG. 1 (f) is obtained.
Therefore, before or after the consumer purchases and opens the package P1b in a form without independence shown in FIG. 1D which is hung in a store or displayed on a shelf, the package P1b is shown in FIG. 1) can be very easily changed to the self-supporting package P1c shown in FIG. 1 (f). On the other hand, the store clerk can also stand up and display the package P1c having the self-supporting property shown in FIG. The fact that the package P1c is self-supporting and the upper end is cut open when the object to be packaged is a liquid, a granular material, or another fluid, or when it is a loose confectionery, or in a microwave heated food. Sometimes preferred.
In the bag-supply filling and packaging machine, the self-standing packaging bag P1a shown in FIG. 1 (c) is opened at the upper end and the bottom portion is flattened as shown in FIG. Then, the packaged object (not shown) is accommodated, the top end opening is closed, the top heat seal 9 is applied, the hanging holes 10, 10 are formed, and the notches 11, 11 are provided to form a package P1c shown in FIG. It may be packed in a cardboard box for distribution and transportation.
[0010]
A self-supporting packaging bag and its package according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 2C shows a self-supporting packaging bag P2a. A package P2b shown in FIG. 2D is a package that is packaged in a non-self-supporting form using the self-supporting packaging bag P2a of FIG. 2C. The package P2c shown in FIG. 2 (e) is a package packaged in a self-supporting form using the self-supporting packaging bag P2a of FIG. 2 (c).
As shown in FIG. 2A, the self-supporting packaging bag P2a shown in FIG. 2C is a fold extending in a direction perpendicular to the vertical direction of the bag (in the direction of arrow Y), and the packaging material lower part is a packaging material. The folds 2 are folded back so as to be in a band shape so as to come inside the upper part, and the overlapping surfaces of the inner surfaces of the folded portions are bonded by heat sealing and the overlapping surfaces of the outer surfaces are not bonded. A packaging material 1 having a lower portion having a relational dimension that forms a bottom portion when the bag is opened three-dimensionally is used. As shown in FIG. 2B, the packaging material 1 is, for example, a parallel plate (not shown). And the horizontal section is bent so as to form a loop shape, and the side edges 1a, 1a of the packaging material are abutted substantially at the center of the bag width (a gap of about 0.5 to 2 mm is left in the production accuracy). Butt is included), No stretching on both sides of stretched film on inner side of butted part A heat sealer (not shown) is pressed from the outside with a connection tape 3 having double-sided heat sealing properties formed by laminating films, and both side edges 1a, 1a of the packaging material and the connection tape 3 are heat-sealed and flattened. As shown in FIG. 2 (c), corner heat seals 6 and 6, which are diagonal seals, are applied to both corners of a portion 5 constituting a bottom surface portion below the folds 2, as shown in FIG. In the middle of the heat seals 6, 6, press press bars 7, 7 are provided so that the oblique heat seal portion can be easily folded in two at the time of opening the bag three-dimensionally, and excess triangular portions 8, 8 at both corners are cut off. Further, a top heat seal 9 is applied to the upper end edge of the flat cylinder, and hanging holes 10 are formed. A pair of left and right notches 11, 11 for opening is provided.
As shown in FIG. 2D, the self-supporting packaging bag P2a shown in FIG. 2C is turned upside down to open the lower end opening of the bag to accommodate a packaged object (not shown) and to open the lower end opening. Is closed and the bottom heat seal 4 is applied to form a package P2b having no self-sustainability, which has exactly the same form as the package P1b shown in FIG. 1 (d). 2) has exactly the same effect as the package P1a shown in FIG. 1 (c), and the package P2b shown in FIG. 2 (d) has the self-sustainability shown in FIG. 2 (e). Can be very easily changed to the package P2c having
[0011]
A self-contained packaging bag and its package according to a third embodiment of the present invention will be described with reference to FIG.
FIG. 3C shows the self-supporting packaging bag P3a. A package P3b shown in FIG. 3D is a package packaged in a form without independence using the self-supporting packaging bag P3a of FIG. 3C. The package P3c shown in FIG. 3 (f) is a package packaged in a self-supporting form using the self-supporting packaging bag P3a of FIG. 3 (c).
As shown in FIG. 3A, the self-supporting packaging bag P3a shown in FIG. 3C is a fold extending in a direction perpendicular to the vertical direction of the bag (the direction of arrow Y), and the packaging material lower part is a packaging material. The folds 2 are folded back so as to be in a band shape so as to come inside the upper part, and the overlapping surfaces of the inner surfaces of the folded portions are bonded by heat sealing and the overlapping surfaces of the outer surfaces are not bonded. A packaging material 1 having a lower portion having a relational dimension constituting a bottom surface portion when the bag is opened three-dimensionally is used, and as shown in FIG. After being cut in half, they are overlapped, and both side edges are pressed with a heat sealer to give side heat seals 12 and 12 to form a flat tubular shape. Then, as shown in FIG. 4 and a portion 5 constituting a bottom surface portion below the fold 2 Corner heat seals 6 and 6 which are diagonal seals are applied to both corners, and a press streak 7 is provided in the middle of the corner heat seals 6 and 6 so that the diagonal heat seal portion can be easily folded in two at the time of three-dimensional bag opening. , 7 and extra triangular corners 8, 8 are cut off.
As shown in FIG. 3 (d), the self-supporting packaging bag P3a shown in FIG. 3 (c) has an open upper end opening and a packaged object (shown in FIG. The upper end opening is closed, the top heat seal 9 is applied, the hanging holes 10 are pierced, and a pair of left and right notches 11, 11 for opening are provided to form a package P3b having no self-supporting property. Can be.
The package P3b in the form shown in FIG. 3D is a preferred form for hanging and displaying, and a preferred form for stacking and storing in a cardboard box.
The package P3b in the form shown in FIG. 3D is separated from the front side and the rear side by placing a finger on the lower side of the fold 2 to form the self-supporting form shown in FIG. 3F. The shape can be very easily changed to the body P3c. More specifically, by separating the vicinity of the folds 2 on the front side and the rear side from each other, as shown in FIG. 3E, the central portion 5a of the lower portion 5 of the fold 2 is changed as a first stage form change. The triangular ears 5b, 5b stand up and down on both sides thereof in the front-rear direction, and the press-retractor 7 comes to the rising base end outside the triangular ears 5b. Then, as a form change of the second stage, each triangular ear 5b is easily folded so as to fall down and hide inside the fold 2, and the state becomes a self-supporting bottom state shown in FIG. 3 (f).
Therefore, before or after the consumer purchases and opens the package P3b in a form without independence shown in FIG. 3D which is hung in a store or stacked and displayed on a shelf, and FIG. ) Can be very easily changed to the self-supporting package P3c shown in FIG. On the other hand, the store clerk can also stand up and display the package P3c having self-supporting properties as shown in FIG. The fact that the package P3c is self-supporting and the upper end is cut open when the object to be packaged is a liquid, a granular material, or another fluid, or when it is a loose confectionery, or in a microwave heated food. Sometimes preferred.
In addition, in the bag-supply filling and packaging machine, in a state where the upper end opening of the self-supporting packaging bag shown in FIG. 3 (c) is opened and the bottom portion is flattened as shown in FIG. A packaged object (not shown) is accommodated, the upper end opening is closed, a top heat seal 9 is applied, hanging holes 10 are formed, notches 11, 11 are provided, and a cardboard as a package P3c shown in FIG. It may be packed in a box for distribution and transportation.
[0012]
A self-contained packaging bag and its package according to a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 4C shows the self-supporting packaging bag P4a. A package P4b shown in FIG. 4D is a package that is packaged in a form without independence using the self-supporting packaging bag P4a in FIG. 4C. A package P4c shown in FIG. 4E shows a package packaged in a self-supporting form using the self-supporting packaging bag P4a of FIG. 4C.
As shown in FIG. 4A, the self-supporting packaging bag P4a in FIG. 4C is a fold extending in a direction perpendicular to the vertical direction of the bag (the direction of arrow Y), and the packaging material lower part is the packaging material. The folds 2 are folded back so as to be in a band shape so as to come inside the upper part, and the overlapping surfaces of the inner surfaces of the folded portions are bonded by heat sealing and the overlapping surfaces of the outer surfaces are not bonded. A packaging material 1 having a lower portion having a relational dimension constituting a bottom surface portion when the bag is opened three-dimensionally is used, and as shown in FIG. After being cut in half, they are overlapped, and both side edges are pressed with a heat sealer to apply side heat seals 12 and 12 to form a flat cylindrical shape. Then, as shown in FIG. Corner corners, which are oblique seals, at both corners of the part 5 that constitutes the bottom part Seals 6 and 6 are provided, and press press bars 7 and 7 are provided in the middle of the corner heat seals 6 and 6 so that the diagonal heat seal portion can be easily folded in two at the time of three-dimensional bag opening. The triangular corners 8, 8 are cut off, a top heat seal 9 is applied to the upper end edge of the flat tube, and hanging holes 10, 10 are formed. A pair of left and right notches 11, 11 for opening are provided.
As shown in FIG. 4D, the self-supporting packaging bag P4a shown in FIG. 4C is turned upside down to open the lower end opening of the bag to accommodate a packaged object (not shown) and to open the lower end opening. Is closed and the bottom heat seal 4 is applied to form a package P4b having no self-sustainability, which has exactly the same form as the package P3b shown in FIG. 3 (d). 4) has exactly the same effects as the package P3a shown in FIG. 3 (c), and the package P4b shown in FIG. 4 (d) has the self-sustainability shown in FIG. 4 (e). Can be very easily changed to a package P4c having
[0013]
In the self-supporting packaging bag and the package body according to the first to fourth embodiments of the present invention, the self-supporting packaging bag is folded so as to be three-layered in a belt shape, the inner surfaces of the folded portions are adhered to each other, and the outer surfaces are joined. To form the folds 2 where the overlapping surfaces are not adhered, this is achieved by pushing the packaging material with a plunge plate, retreating the plunge plate, making a two-piece part, applying heat sealing, and laying it down sideways it can.
In the third and fourth embodiments of the present invention, a self-supporting packaging bag which can be formed without applying the corner heat seals 6 and 6 and cutting off the outer corner triangular portions 8 and 8 is provided. Even the package can be easily changed from a form without independence to a form with independence, and can be hanged, stacked, or self-supported according to various items to be packed. This method is included in the present invention because the display method can be selected.
In the self-supporting packaging bag and its package according to the first to fourth embodiments of the present invention, it is preferable that the folds 2 are formed by heat sealing. Do not eliminate.
In the self-supporting packaging bags and the packaging bodies according to the first and second embodiments of the present invention, the reason why the connecting tape 3 is a three-layer film in which an unstretched sealant film is laminated on both sides of a stretched film is as follows. This is for securing the heat seal between the connection tapes at the bottom heat seal, the top heat seal, and the fold. Note that the packaging material 1 may be composed of a sealant film alone. Further, a stretched film having no heat sealability may be obtained by applying a heat sealant to both edges.
[0014]
The packaging material 1 for producing the self-supporting packaging bag of the present invention is made of, for example, the following laminated film.
(1) OPP 20 μm / adhesive / LLDPE 20 μm (outer layer / inner layer: sealant)
(2) OPP 20 μm / adhesive / uniaxially or biaxially oriented HDPE / adhesive / LLDPE (outer layer / intermediate layer / inner layer: sealant)
(3) OPP 20 μm / adhesive / aluminum foil / adhesive / LLDPE 20 μm (outer layer / intermediate layer / inner layer: sealant)
(4) OPP (silica or alumina deposited layer) / adhesive / uniaxially or biaxially oriented HDPE / adhesive / LLDPE 20 μm (outer layer / intermediate layer / inner layer: sealant)
(5) PET 20 μm / adhesive / aluminum foil / adhesive / OPP 20 μm / adhesive / LLDPE 20 μm (outer layer / intermediate layer / intermediate layer / intermediate layer / inner layer: sealant)
(6) Paper / adhesive LLDPE 50 μm (outer / inner: sealant)
(7) PET 12 μm / adhesive / LLDPE 20 μm (outer layer / inner layer: sealant)
(8) AL 9 μm / adhesive / LLDPE 70 μm (outer layer / inner layer: sealant)
(9) PET / SiOx 12 μm / adhesive / LLDPE 100 μm (outer layer / inner layer: sealant)
(10) Co-extrusion of 5 μm of CPP, 30 μm of OPP / adhesive / 20 μm of CPP (outer layer / inner layer; inner / outer surface sealant)
In order to form the folds by heat sealing, the above example of the configuration of the packaging material has a sealant film on the inner surface.
[0015]
As a modified example of the self-supporting packaging bag and the packaging body according to the first to fourth embodiments of the present invention, the corner heat seals 6 and 6 are not bent in a V shape, but are formed in a linear shape or a curved shape. Is also good.
As a modified example of the self-supporting packaging bag and the packaging body according to the first and second embodiments of the present invention, the center heat is achieved by abutting the packaging material side edges 1a, 1a together without using the connection tape 3. A pillow form may be used in which a seal is directly applied, the sheet is turned sideways, and the sheet is heated to maintain the turned state.
As a modified example of the self-supporting packaging bag and the packaging body according to the third and fourth embodiments of the present invention, when the packaging materials 1 are folded in two, they are overlapped, and the packaging material side edges are The side heat seal 12 is applied to the other side, and the side loop-shaped folded edge on the opposite side need not be subjected to the side heat seal.
[0016]
In order to mass-produce the self-supporting packaging bags according to the first to fourth embodiments of the present invention, a continuous heat treatment is performed using a continuous wrapping material with folds having folds at the pitch of the bag, and a vertical heat is applied to the former. Seal to form a continuous flat plate with folds.
[0017]
The self-supporting packaging bag according to the first to fourth embodiments of the present invention is provided with a spout on the upper part, providing a spout, providing a zipper, providing a seal valve opened with high-pressure steam, Providing a cut tape is also included in the technical scope.
[0018]
【The invention's effect】
As described above, the self-supporting packaging bag and the packaging body of the present invention are folded in a strip shape so as to be three-layered, and the folds formed by bonding the inner surfaces of the folded portions are formed at least in the front and rear portions. It is a configuration that hides the bottom part in preparation for the lower end or the lower end of the peripheral surface part, since the bag is made after forming the fold when the packaging material is flat, the appearance is not likely to wrinkle on the fold A clean fold is obtained, and the fold is located at the extended edge of the front and rear surfaces, and does not have an independent appearance as a fold and forms a flat surface with the front, rear or peripheral surface, so a tight packaging form Feel good, it is excellent in aesthetic appearance as a packaging form, complete sealing of the fold is ensured, it can be easily changed from a form that does not have self-sustainability to a form that has self-sustainability, and it is hung according to various types of packages State, stacked, or self-supporting It can be selected in any of the exhibition method of the state. In particular, the self-supporting packaging bag and the package body according to [Claim 2] are extremely easily formed from a non-self-supporting form to a self-supporting form since a press streak is provided in the middle of the corner heat seal. Can be changed.
In addition, before or after a consumer purchases and opens a non-independent form of a package that is suspended or stacked on a shelf and displayed, the form of the package is very easily changed to a self-supporting package. it can. The fact that the package is self-supporting and the upper end is cut open means that the packaged product is a liquid, powder, other fluid, or loose confectionery, or a microwave heated food. Sometimes preferred.
[Brief description of the drawings]
FIG. 1 shows a self-supporting packaging bag according to a first embodiment of the present invention.
1A is a perspective view of a foldable packaging material, FIG. 1B is a perspective view showing a flat tube with folds, and FIG. 1C is a perspective view of a self-supporting packaging bag. FIG. 1D is a perspective view of the package having no self-sustainability, and FIG. 1E is a package showing a first stage planar development state of a bottom portion in which the vicinity of the front and rear folds is separated from each other. FIG. 1F is a perspective view of a self-supporting package.
FIG. 2 shows a self-supporting packaging bag according to a second embodiment of the present invention.
2A is a perspective view of a foldable packaging material, FIG. 2B is a perspective view showing a flat tube with folds, and FIG. 2C is a perspective view of a self-supporting packaging bag. FIG. 2D is a perspective view of a non-self-supporting package, and FIG. 2E is a perspective view of a self-supporting package.
FIG. 3 shows a self-supporting packaging bag according to a third embodiment of the present invention.
3A is a perspective view of a foldable packaging material, FIG. 3B is a perspective view showing a flat tube with folds, and FIG. 3C is a perspective view of a self-supporting packaging bag. FIG. 3D is a perspective view of the package having no self-supporting property, and FIG. 3E is a package showing a first-stage flattened state of the bottom surface portion where the vicinity of the front side and rear side folds is separated from each other. FIG. 3F is a perspective view of a self-supporting package.
FIG. 4 shows a self-supporting packaging bag according to a fourth embodiment of the present invention.
4A is a perspective view of a foldable packaging material, FIG. 4B is a perspective view showing a flat tube with folds, and FIG. 4C is a perspective view of a self-supporting packaging bag. FIG. 4D is a perspective view of a non-self-supporting package, and FIG. 4E is a perspective view of a self-supporting package.
[Explanation of symbols]
A self-contained packaging bag and its package according to a third embodiment of the present invention will be described with reference to FIG.
P1a: self-supporting packaging bag, P1b: non-self-supporting package, P1c: self-supporting package, 1 ... packaging material, 2 ... fold, 1b ... packaging Material side edges, 3 ... Connection tape, 4 ... Bottom heat seal, 5 ... Part constituting bottom surface below fold, 6 ... Corner heat seal, 7 ... Pressing Streaks, 8 extra triangles at both corners, 9 top heat seal, 10 hanging hole, 11 notch, 12 side heat seal, P2a self-supporting packaging bag , P2b: a package without independence, P2c: a package with independence, P3a: a packaging bag with independence, P3b: a package without independence, P3c ... -Self-supporting package, P4a: self-supporting packaging bag, P4b: not self-supporting Sokarada, packaging having a P4c ··· autonomy,

Claims

A fold extending in a direction perpendicular to the vertical direction of the bag and folded in a band shape so that three folds are overlapped, the overlapped surfaces of the inner surfaces of the folded portion are adhered, and the overlapped surfaces of the outer surfaces are not adhered. The lower part of the fold is made of a wrapping material having a bottom portion when the bag is opened three-dimensionally, and the wrapping material is bent into a loop and the edges are back-sealed or sealed. By being folded in two and the edges are side-sealed, or by folding the packaging material in half and being side-sealed on both sides, or by cutting the packaging material to half width and overlapping and being side-sealed on both sides A flat cylinder is formed, corner heat seals are applied to both corners of the bottom surface below the fold, triangular corners outside the corner heat seal are cut off, and a bottom heat seal or a top heat seal is applied. Self-supporting packaging bag characterized in that it is Seibukuro to form.

A fold extending in a direction perpendicular to the vertical direction of the bag and folded in a band shape so that three folds are overlapped, the overlapped surfaces of the inner surfaces of the folded portion are adhered, and the overlapped surfaces of the outer surfaces are not adhered. A wrapping material having a lower portion below the fold so as to constitute a bottom surface portion when the bag is opened three-dimensionally, and the wrapping material is folded in two and the edges are side-sealed, or the wrapping material is folded in two. A flat cylinder is formed by side-sealing both sides, or by cutting and stacking the packaging material in half width and side-sealing both sides, and a bottom heat seal or a top heat seal is applied to produce a flat shape. A self-supporting packaging bag characterized by being packaged.

A package, wherein the packaged product is housed in the self-supporting packaging bag according to [1] or [2], the opening is closed, and heat sealing is performed.

The self-supporting packaging bag according to claim 1 or 2 stores the article to be packaged, closes the opening, and performs heat sealing, so that the lower part of the front part and the lower part of the rear part are separated. The package according to claim 1, wherein the fold is a lower end of the bag which is flush with the peripheral surface, and the bottom is hidden inside the fold.